Extrusion



FIG. 1 is a perspective view of an extrusion showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left view thereof;

FIG. 5 is a right view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The extrusion is shown with symbolic break lines along its length. Any portions of the extrusion between the break lines form no part of the claimed design. 

CLAIM The ornamental design for an extrusion, as shown. 